diff options
Diffstat (limited to 'gdb/i386-linux-tdep.c')
| -rw-r--r-- | gdb/i386-linux-tdep.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/gdb/i386-linux-tdep.c b/gdb/i386-linux-tdep.c index f42f6b7..85ae183 100644 --- a/gdb/i386-linux-tdep.c +++ b/gdb/i386-linux-tdep.c @@ -244,6 +244,27 @@ i386_linux_sigtramp_p (struct frame_info *next_frame) || strcmp ("__restore_rt", name) == 0); } +/* Return one if the unwound PC from NEXT_FRAME is in a signal trampoline + which may have DWARF-2 CFI. */ + +static int +i386_linux_dwarf_signal_frame_p (struct gdbarch *gdbarch, + struct frame_info *next_frame) +{ + CORE_ADDR pc = frame_pc_unwind (next_frame); + char *name; + + find_pc_partial_function (pc, &name, NULL, NULL); + + /* If a vsyscall DSO is in use, the signal trampolines may have these + names. */ + if (name && (strcmp (name, "__kernel_sigreturn") == 0 + || strcmp (name, "__kernel_rt_sigreturn") == 0)) + return 1; + + return 0; +} + /* Offset to struct sigcontext in ucontext, from <asm/ucontext.h>. */ #define I386_LINUX_UCONTEXT_SIGCONTEXT_OFFSET 20 @@ -414,6 +435,8 @@ i386_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) /* GNU/Linux uses the dynamic linker included in the GNU C Library. */ set_gdbarch_skip_solib_resolver (gdbarch, glibc_skip_solib_resolver); + + dwarf2_frame_set_signal_frame_p (gdbarch, i386_linux_dwarf_signal_frame_p); } /* Provide a prototype to silence -Wmissing-prototypes. */ |